LMC6464AIM CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The LMC6464AIM is a CMOS linear amplifier integrated circuit manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-SOIC surface mount package. This device is classified as obsolete product status. The LMC6464AIM operates across a wide supply voltage range of 3V to 15.5V with rail-to-rail output capability, making it suitable for low-power analog signal conditioning applications.

Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, production planning, and long-term component availability assurance. Substitute parts are selected based on matching electrical characteristics, package compatibility, and functional equivalence.

Key Parameters

Parameter	Value
Amplifier Type	CMOS
Number of Circuits	4
Output Type	Rail-to-Rail
Slew Rate	0.028 V/µs
Gain Bandwidth Product	50 kHz
Current - Input Bias	0.15 pA
Voltage - Input Offset	250 µV
Current - Supply	90 µA (x4 Channels)
Current - Output / Channel	75 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	15.5 V
Operating Temperature	-40°C ~ 85°C (TJ)
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LMC6464AIM are categorized based on the following substitution criteria:

Direct Equivalents (Same Circuit Count & Package): Parts that maintain identical or functionally equivalent electrical specifications, package form factor (14-SOIC), and four-circuit configuration. These substitutes preserve pin-for-pin compatibility and circuit board layout without modification.

Manufacturer Recommended Alternatives (Active Product Status): Parts recommended by Texas Instruments and STMicroelectronics that offer active product status, enhanced electrical performance, or automotive-grade qualification. These may include improved slew rate, bandwidth, or temperature range specifications while maintaining core functionality.

Key Parameters for Substitution Determination:

Number of Circuits (4 circuits required for direct substitution)
Package Type (14-SOIC form factor)
Output Type (Rail-to-Rail capability)
Supply Voltage Range (minimum 3V, maximum 15.5V or higher)
Operating Temperature Range (-40°C minimum)
Mounting Type (Surface Mount)

Parameter Comparison

Parameter	LMC6464AIM	LMC6464AIM/NOPB	TS914AIDT	TS914AIYDT	TS914IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics
Number of Circuits	4	4	4	4	4
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	0.028 V/µs	0.028 V/µs	1 V/µs	1 V/µs	1 V/µs
Gain Bandwidth Product	50 kHz	50 kHz	1.4 MHz	1.4 MHz	1.4 MHz
Current - Input Bias	0.15 pA	0.15 pA	1 pA	1 pA	1 pA
Voltage - Input Offset	250 µV	250 µV	5 mV	5 mV	10 mV
Current - Supply	90 µA (x4)	90 µA (x4)	230 µA	230 µA	230 µA
Current - Output / Channel	75 mA	75 mA	60 mA	60 mA	60 mA
Voltage - Supply Span (Min)	3 V	3 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	15.5 V	15.5 V	16 V	16 V	16 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Obsolete	Obsolete	Active	Active	Active
Grade	Standard	Standard	Automotive	Automotive	Automotive
Qualification	None Listed	None Listed	AEC-Q100	AEC-Q100	AEC-Q100
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Substitution:

LMC6464AIM/NOPB serves as the direct equivalent to LMC6464AIM, maintaining identical electrical specifications and package configuration. Both parts share obsolete product status. The primary distinction is packaging format: LMC6464AIM/NOPB is supplied in Tube packaging, while the base LMC6464AIM packaging is unspecified. Both are ROHS3 compliant with MSL Level 1 rating.

Active Product Alternatives:

For applications requiring active product status and extended component lifecycle support, the STMicroelectronics TS914 series (TS914AIDT, TS914AIYDT, TS914IDT) provides four-circuit CMOS amplifier functionality in 14-SOIC packaging with automotive-grade qualification (AEC-Q100). These parts offer enhanced electrical performance including 1V/µs slew rate and 1.4 MHz gain bandwidth product compared to the LMC6464AIM's 0.028V/µs and 50 kHz specifications. Operating temperature range extends to 125°C, providing superior thermal performance.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing processes and storage requirements. The TS914 series automotive qualification provides additional reliability assurance for mission-critical applications.

Supply Voltage Compatibility:

All substitute parts operate within or exceed the LMC6464AIM supply voltage range. TS914 variants support 2.7V minimum supply, providing enhanced low-voltage operation capability compared to the 3V minimum of the LMC6464AIM.

Frequently Asked Questions (FAQ)

Q: Can TS914AIDT directly replace LMC6464AIM in existing circuit boards?

A: Yes, TS914AIDT provides pin-compatible substitution in the 14-SOIC package. However, the enhanced electrical performance (higher slew rate and bandwidth) may require circuit validation to ensure compatibility with existing signal conditioning requirements and stability margins.

Q: What is the primary difference between TS914AIDT, TS914AIYDT, and TS914IDT?

A: The primary difference is voltage input offset specification. TS914AIDT specifies 5 mV input offset, TS914AIYDT specifies 5 mV input offset, and TS914IDT specifies 10 mV input offset. All three maintain identical package, circuit count, and core electrical performance characteristics. Selection depends on input offset accuracy requirements for the application.

Q: Why does LMC6462AIMX/NOPB appear in the substitute list despite having only 2 circuits?

A: LMC6462AIMX/NOPB is listed as a manufacturer-recommended alternative for applications where dual-channel amplification is sufficient. This part shares identical electrical specifications per channel (slew rate, bandwidth, input bias current, supply voltage range) and maintains active product status. Circuit board redesign is required for implementation.

Q: Are the TS914 series parts suitable for low-power applications?

A: TS914 series parts consume 230 µA total supply current compared to LMC6464AIM's 90 µA. For power-constrained applications, the LMC6464AIM/NOPB direct equivalent maintains lower power consumption. TS914 series selection is appropriate when enhanced performance and automotive qualification justify increased power consumption.

Q: What packaging options are available for substitute parts?

A: LMC6464AIM/NOPB is supplied in Tube packaging. TS914AIDT and TS914IDT are supplied in Cut Tape (CT) & Digi-Reel® format. TS914AIYDT packaging is unspecified in available data. Verify packaging compatibility with procurement and assembly processes before final part selection.

Q: Do all substitute parts maintain the same output current capability?

A: No. LMC6464AIM and LMC6464AIM/NOPB specify 75 mA output current per channel. TS914 series variants specify 60 mA output current per channel. Applications requiring maximum output current should retain the LMC6464AIM/NOPB equivalent or validate TS914 performance against load requirements.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q100) is mandatory for automotive and safety-critical applications. TS914 series parts carry AEC-Q100 qualification. LMC6464AIM and LMC6464AIM/NOPB do not list automotive qualification. Verify application requirements before selecting between standard and automotive-grade alternatives.

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